See also:

CHECK ENGINE Malfunction indicatorlight
On-Board Diagnostics II (OBDII): As you drive, a computer called "OBDII" monitors your vehicle's engine, transmission, electrical and emission systems. The CHECK ENGINE light will light ...

What is an Onboard Diagnostic System (OBD II)?
OBD II is part of your vehicle's computerized engine management system. It stores diagnostic information about your vehicle's emission controls. It can light the Check Engine light (MIL) if it ...

Shiftlock
When your vehicle is parked, the gear selector is locked in the P (Park) position. To release the selector from this position, turn the ignition key to position II (or start the engine), depress th ...